new product gallery of Woocommerce not working in enfold theme

Hello,

the latest product gallery enhancement of WooCommerce does not work on my side. The pictures of the products are blurred and pixelated. I work with a child theme and I added the following in the functions.php of the child theme (following the FAQ-From wooC):

function yourtheme_setup() {
add_theme_support( ‘wc-product-gallery-zoom’ );
add_theme_support( ‘wc-product-gallery-lightbox’ );
add_theme_support( ‘wc-product-gallery-slider’ );
}

Any ideas why the pictures don’t show properly?

Thank you very much.

Kind regards,

Anja